After the cement is placed in the wellbore and has been left static, it begins to develop gel strength (gelation). In this state, the unset slurry cannot fully transmit hydrostatic pressure to the formation (loss of overbalance). The time period of gelation before cement sets can last for several h... read more
Dust control measures apply to any construction site where there is the potential for air and water pollution from dust traveling across the landscape or through the air. Dust control includes practices used to reduce or prevent the surface and air transport of dust during construction. The EPA’s re... read more
Cementing is the process of mixing cement with water and additives into slurry that is then poured into a cavity to isolate it from its surroundings and prevent the entry of water and other liquids into the cavity and the flow of liquids from the cavity into its environment. In oil and gas drilling... read more
Bonded Fibre Matrix (BFM). The first step involves spraying the soil with a water solution of seed and fertiliser — which is the hydroseeding solution. This part of the procedure ensures seed-to-soil contact. The second step requires the spreading of a slurry composed of a robust and non-rewetting ... read more
The cement sheath is vital in that it serves to protect and support the casing and deliver the necessary zonal isolation for the life of the well. And while cementing is conventionally viewed as the last step in drilling operations, Halliburton also designs cementing solutions as the first step in ... read more